87823806 has 32 divisors (see below), whose sum is σ = 207218688. Its totient is φ = 24282720.

The previous prime is 87823793. The next prime is 87823817. The reversal of 87823806 is 60832878.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32425 + ... + 35028.

It is an arithmetic number, because the mean of its divisors is an integer number (6475584).

Almost surely, 2^87823806 is an apocalyptic number.

87823806 is an abundant number, since it is smaller than the sum of its proper divisors (119394882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87823806 is a wasteful number, since it uses less digits than its factorization.

87823806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67496.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 87823806 is about 9371.4356424189. The cubic root of 87823806 is about 444.4989622336.

The spelling of 87823806 in words is "eighty-seven million, eight hundred twenty-three thousand, eight hundred six".